Supply Our Soldiers Act of 2015
Directs the Department of Defense to provide for a program under which postal benefits are provided to a member of the Armed Forces who is on active duty and who is either: (1) serving in Iraq, Afghanistan, or another hostile fire area designated as eligible for hazardous duty pay; or (2) hospitalized at a military medical facility as a result of such service. Requires the postal benefits to be in the form of coupons, vouchers, or other evidence of credit to use for postal-free mailings.
Makes the benefits program applicable during FY2016-FY2021.